When it comes to choosing a screw for your next project, there are many factors to take into consideration. One of the most important is the screw size. The right screw size will ensure that your fastener can hold the load you need it to, without tearing or splitting the substrate. It will also help you avoid over-tightening and potentially damaging your substrate.
Screw sizes are based on either the imperial or metric system. Screws with measurements in the imperial system are typically listed as a gauge (or diameter) and a length, such as 10 x 2″. Screws with measurements in the metric system are usually listed as a thread diameter and a pitch. For example, an M4 screw has a thread diameter of 4 mm and a length from the head to the tip of the screw of 40 mm.
There are also many types of screws designed for specific purposes, such as drywall and wood. For example, drywall screws have a unique curve on the junction of the shaft and head to prevent tearing when inserted into drywall. Wood screws have coarse and fine threads to suit different types of wood. And some screws have a non-threaded section near the head that helps disperse heat.
Another factor to consider when choosing a screw is its load bearing capacity and embedment length. For maximum performance, you should select a screw that is approximately half the length of the material it will be fastened into. If you select a screw that is shorter than this, it will not anchor properly. And if you select a screw that is longer, it will put too much stress on the substrate and may cause damage to the materials beyond the screw. #6 screw size